Advancing greywater reuse for sustainable water management in Ontario
Exploring practical approaches to greywater reuse that can help reduce water consumption and support more sustainable buildings across Ontario
Hamid Kariminiaae Hamedaani, SMART Centre
About the project
This research examined the potential for greywater recycling systems in commercial, institutional, and industrial buildings. By evaluating technologies, regulations, and real-world applications, the project sought to identify opportunities to expand water reuse beyond residential settings.
The challenge
Despite growing interest in water conservation, greywater reuse remains underutilized in Ontario due to regulatory uncertainty, implementation costs, and limited awareness. The project aimed to identify scalable solutions that could support broader adoption across multiple sectors.
Approach
- Reviewed greywater technologies and treatment approaches used in Canada and internationally
- Examined case studies demonstrating water reuse in a variety of settings
- Assessed opportunities and barriers for implementation in Ontario
- Evaluated regulatory considerations and stakeholder needs
- Developed recommendations to support future adoption and pilot projects
Results
- Identified promising greywater technologies for non-residential applications
- Evaluated opportunities for implementation in commercial and institutional buildings
- Highlighted regulatory gaps that may limit broader adoption
- Developed recommendations for pilot projects and future policy development
- Created a roadmap to support expanded use of greywater systems in Ontario
Why it matters
This research helps advance sustainable water management practices and supports organizations looking to reduce their environmental footprint. The findings can help:
- Reduce demand on potable water resources
- Support more sustainable building operations
- Improve resilience to future water management challenges
- Inform policy development and industry best practices
- Encourage broader adoption of water reuse technologies